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w 2 ShAe-tS -Sheet 1.; A. KLONNE. APPARATUS FOR HEATING-RETORTS. AND MUFFLES. A No. 378,097. Patented Feb. 21.1888.

A MIMWWZTAH n 1 .s a H fizlm I M... m Q 5 A n 1 a A L/ 9 i M a (No Model.)

' UNITED STAT-ES PATENT OFFICE.

AUGUST KLoiusE, OF DORTMUND, raossm, GERMANY.

APPARATUS FOR HEATING RETORTS AND MUFFLES.

' SPECIFICATION forming part of Letters Patent No. 378,097, dated February 21, 1888.

Application filed January 2, 1885. Serial No. 152,362. (No model.) Patented in Euglund'March 22, 1882, No. 1,220, and March 13, 1888, No. 1,330; in Germany April 20, 1882, No. 25,127, and July 18, 1882. Nos. 25,201 and 26,906 in France June 19, 1852, No. 137,478, and in Austria-Hungary July 20, 1885, No.11,3l0, and No. 37,908. v

To all 1.0720722, it may concern:

Be it known that I, AUGUST KLo'NNE,a subject of the King of Prussia and Emperor of Germany, and a resident-0f the city of Dortmund, in the Kingdom of Prussia and German Empire, have invented certain Improvements in Apparatus for Heating Retorts or Muffles for the'Manufacture of GoatGas or other Purposes, (the same having been patented in Germany by Patents No. 25,127, dated April 20, 1882, No. 25,201, dated J uly18, 1882, and N 0. 26,906, dated July 18, 1882; in Great Britain by Patents N 0. 1,220, dated March 22, 1882, and N 0. 1,339, dated March 13, 1883; in France by Patent No. 137,478, dated June 19, 1882; in Austria Hungary by Patent No. 11,310, datedJuly 20, 1885,) of which the following is a specification.

This invention relates to furnaces in which a primary supply of airis delivered to the firebox and a secondary supply of air is mingled with the gases which form part of the products of combustion.

The said invention consists 'in the peculiarly-constructed recuperator and its combination with the other parts of the furnace, as hereinafter set forth and claimed.

In the accompanying drawings, Figure 1 represents a vertical transverse view of a retortfurnace embodying my invention, on the line A B of Fig. 2. Fig. 2 represents-a vertical transverse section on line C D of Fig. 1, Fig. 3 being a horizontal section on the line E F, Fig. 1, and'Fig. 4 being a detail horizontal section on the line G H of Fig. 1. Figs. 5, 6, 7, and 8 are detail views of the recuperator-tiles. Figs. 9, 10, 11,.and 12 are views of another modification of 'my furnace, and correspond approximately to Figs. 9, 2, 3, and 12.

A designates the furnace. The fire-box (0 thereof is provided with a grate, y, and a firebridge, 1), beneath which is a water-tank, w. The fire-box is located in the middle of the lower part of said furnace, which as (shown on Sheet,1,) has six retorts, 0, arranged around and above it, an'arch, Z), separating said firebox from these retorts and the air-space immediately below them.

The primary supply of air, as well as the secondary, is heated before being used. The priters through the rear wall of the furnace at c passes'thropgh the other half of the recuperator, then,by channels (1, to the vertical chan nels e, which deliveritto the gases arising from the combustion withii the firebox. The products of combustionfinally pass out of the furnace either through'the main chimney-flue or through separate fines at the back of the furnace. primary and secondary supplies of maybe in two sections, arranged on eachs'ide 0f the fire-box, as shown in Figs. 1 and 3, and is constructed of tiles Q, Figs. 5, 6, 7;a'nd 8 each of which is constructed with a vertical passage, Q and a horizontal passage, Q--the former for inflowing air, the latter foroutflowing products of combustion. These passages are-ar- The recuperatonfor treating the ranged in quincunx order to getthemaximum heating effects. These tiles Q are held in place by additional removable tiles, to, t, and x, which allow said recuperator to be moved a little in any direction. The regulating ofthe air-supply draftis performed by suitable slides. The fire-bridge 3 is cooled by an open watertank, w, placed underneath it.

The figures on Sheet 4showanother n odifi-- cation having nine retorts, 0th thefire-box and recuperator being beneat the floor of thefurnace, and also beneath the set of retorts, The

recuperator is arranged in two sections, oneon each side of the fire-box an The latter has two inclined grates of bars pp' one above the other; or agrate arranged'insteps, or having any other suitable construction, may be used instead. The fuel-doors and clinker-doors are closed air-tight. The firefbridge y is cooled by an open Water-tank,;w, placed underneath it. The products of combustion pass through openings 9 in the top of the arch b into a 7 horizontal fiue,d which extends under the retorts. This flue has lateral branches 6 on both sides, through which said products of combustion flow into passages f, which conduct them to mix with thesecondary supply of air, the latter having been previously primary supply of air enters at aflr eaching the.

recuperator at t. It passes in a serpentine course through said recuperator and enters the fire-box at Z under the upper grate.

The products of combustion rise fronrthe.

passages to the top of the furnace, heating the retorts, pass to the right and left over the tops of the latter, and then flow downward to the recuperator, giving off their heat to the primary and secondary supplies of air, and then escape by separate chimneys, 7a, or by a main flue leading to a principal chimney.

The partitions between the retorts are provided with openings, which allow the passage of a part of the heating gases, so as to impart suflicient heat to the bottoms of the retorts by preventing stagnation of gases in the open space between the retorts. The coveringplates m above the retorts protect the arch of the retort-setting from direct damage by the flame, and form, also, air-spaces, which diminish the loss of heat by radiation.

Between the lower retorts and the recuperator are a series of plates, 2, provided with openings T, which may be covered partly by dampers to regulate the temperature of the retorts and their surroundings.

WVhen it is preferred not to preheat the primary supply of air, it is allowed to enter through the clinker-door below said fire-bridge and grate.

In furnaces for six, seven, or eight retorts the products of combustion pass immediately from the firebox to the space below the retorts without being first conducted through a flue, such as I have indicated by d. The airsupply and chimney-draft are regulated by dampers and flap-valves. In these constructions all the air and gas flues are easily inspected and cleaned, and when the parts are properly put together no leakage will occur. The same construction of furnace may be applied to many other uses besides the heating of gas-retorts.

I am aware that it is not broadly newto employ a reeuperator heated by the escaping products of combustion and heating the any supply; also, that it is not new to arrange a tank of water below the fire-bridge; also, that it is not new to interpose a shield-plate or wall between a crucible and the arch of a furnace; also, that it is not new to interpose a regulating slide or damper between a recuperator and the retort-setting; also, that it is not broadly new to provide a recuperator with alternating passages for inflowing air and outflowing products of combustion.

I am also aware that it is not broadly new to arrange the passages in a recuperator for air and the products of combustion in quincunx order. This, therefore, I do not broadly claim.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A recuperator, E, provided with a set of tiles, Q, each having a passage, Q, for inflowing air, and a passage, Q, for outtlowing products of combustion,'these passages being at right angles to each other and arranged in quincunx order, as shown, in combination with a firebox, an arch over it having an opening or openings for the escape of the products of combustion, and a set of retorts arranged above said firebox, substantially as set forth.

2. A recuperator provided with a set of tiles, Q, each having a passage, Q, and a passage, Q", the one for inflowing air and the other for outfiowing products of combustion, these passages being arranged at right angles to each other and in quincunx order, for the purpose set forth.

3. A recuperator consisting of tiles Q, each having a passage, Q, and a passage, Q, said passages being arranged in quincunx order and at right angles to each other, for the purpose stated, in combination with supplemental movable tiles, x, t, and n, which allow said tiles Q to be moved, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

AUGUST KLQNNE.

\Vitnesses:

L. R001, J r., A. HELLYER.

ICO 

